Drying-room.



E. E. PERKINS.

DBYING BOOM. nrnxonxol mls nn.1a.1n1a.

1,036,323. Pand Aug. 2o, 1912.

www @gw wa* To all whom i't may concern.'

Be it known that I, Emmi E. Paname, a 'citizen of the United States,residing at Chicago, in the county ofCook and State of Illinois, haveinvented certain new-and useful Im rovements in Dryin Rooms, of

which tie following is a speci cation.

This invention re ing kilnsiind more plarticularly to 'the dryingrooinitself and as, for one of its riinanyJ/objects, the provision of adrying roqm equipped with dryin a varatusi which will be chea to instal,'e cient in y, its loperation and w ich can be regulated to a finedegree of ncety to produce the ref quired' temperature, air circulationand humidity necessary f or the drying of ar- Ati'cles or materials ofvarious characters. The invention will be best understood by referenceto the following description when considered in' connection with the'accom- Vpanyin whic-hs owe a perspective'view of a d ing *t roomembodying one form of the inven ion. From the drawings it will beobserved e; 'that the room roper comprises a lurality of walls 6, ,andspaced apar to roy vide dead air insulatin the room. Obviously,teconstruction of the walls may vary widely in dierent'installations, theparticular structure disclosed in the present instancebeingmerel I n,the obect of the wall constru ion being to f-f provi e a room with heatinsulatin which will plrevent dissipation and oss of heat from t einterior of the room. The floor 9, which'may be o any preferred conystruction, ina be equipped with rails upon which cars o materia may betransported to and from the room, or suitable racks or ix hangers may beprovided within the-room a.' supported. These mechanical details, how-.,f. ever, will be madejn each instance td conform to the requirementsof the particular gli: material or articles to be dried. i The heat issupplied to the room by means of coils 10 sup rted on suitable raoketase; 11 on one of t e side walls adjacent the floor. The coils arepreferably supplied y with steam from any suitable source of sup lywhich furnishes the required heat and rthe t'proper temperaturemaintained with- 1, in e room by a controlhng valve 19 auto'-lpectaeation of Lettera Patent. application aiea april is, isis. semine. escasa sired. The air which is ates in general to dry-- draivings,the single, ligure of' spaces surroun ing illustrative,

walls '3gp upon which the material to be dried may be' UNITED STATESPiiiEN'i oFFioE. Elim E. PERKINS, F CHICAGO, ILLINOIS.

Patented Aug. 20, 1912.

matically vcontrolled from a suitable thermostat. 13. The requiredhumidit may be maintained Aby opening the han operated valve 14 locatedin a 'pi e 15 connected with the coils, throu h whic steam may beadmitted to the interior of the room, if delieated by the coil will riseand the air along the floor of the room will flow toward the coil toreplace the heated air, a circulation within the room being thereby setup. In order to further assist in the maintenance of the propercirculation of air I have mounted on the opposite side of the room fromthe heating coil a cooling coil -16 through which cold water or brine iscirculated by any suitable mechanism. The air .which is cooled by thecoil 16 will, of course, drop to the bottom of the room where it willflow along the door to the o posits wall to be heated by the coil 10, wereupon it will rise again. A continuous circulation of air is therebymaintained within the room and the articles or material located thereinwill be dried under the most favorable conditions.

. Many articles and materials such fas macaroni and other flour productscan not be dried under a high temperature because of certain chan ywhich take place in their structure'an compositionwhen subjected to hi hheat. The rapidity, therefore, with l.w ich said articles can-be driedunder moderate-temperature will depend upon the rapidity of the aircirculation within the drymi room. Other articles auch as leather, ruber and various pigments which also reuire a low drying temperature needto be ried relatively slowly in order to prevent crackin of the surfaceor injurv to the article. t is essential, therefore, if the .room is tob e used for various articles that the circulation b e regulated toconform to the par tisular article being dried. It will be manifest thatthe rapidity of the circulation will depend u 0n-the height of thecooling coil 16 above he floor, since the higher the coils are locatedthe faster the cool air will fall and .the more rapid will be thecirculation within the room. I, therefore, prefer to mount the coolingcoil brackets 17 upon upright pilas or standards 18 and to support thebrach ts at the required hei ht by ad` justable collars 19. The ends oft e coil are connected with-the cooling liquid supply by flexible tubing20 or suitable flexible pig:

which will t the coil to ad) ust to various-heights on the standards'18. n the vdrawings the cooling coil is shown -in lines as adjusted to aposition n ear e ceilm which will produce a rapid circulation an indotted -liiies as ad'usted to a position near the tioor which wilproduce a. much slower circulation. Manifestly the coil may bepositioned at any intermediate point to produce the circulation requiredfor the most successful drying of any particular article or articles ormaterial.

I have found that by simplly adjusting the height of the cooling coil te circulationof couplin air within the d ing room may be regulatedstruction considerable modification without departing' toatine degreeonicet without the employn ieiit of fans, forced rafts, or otherexpensive and complicated mechanisms or structnres and my improved roomuipped as above described may bc`untilized or successfully dryinarticles or materials of widely different c aracters. In soine instanceswhere rtiarticiilarl delicate articles are to be.

dried may ound desirable to position a small screen in front of theheating coil to'prevent direct radiation from the coilto the articlesbut, ordinarily, such a screen is unnecessary. Many variations indetails of constructi will readily su themselves to those skilled in eart ut it will be understood from the foregoing that the illustrativeconshown and described is capable of from the .spiritofthe invention orsacrificing any of the material advantages thereof.

i,ose,sas

I claim:

l. A drier comprising a closed dryin chamber having means for creatingam maintaining a complete circuit of air circulation within the dryingspace of said closed chamber, said means including a heating devicewithin the drying s acc and at one of the u right sides-only o thechamber, and a coo ing device within the drying space and at theopposite upright side only of the chamber with its coo ing surface indirect contact with the air of the drying space, substantially asdescribed.

2. A drier comprising a closed drying chamber having means for creatingand maintainin a complete circuit of air circulation within the dr ingspace of said chamber said means inc uding a heatinfr device within thed ing space of said hambcr, and a cooling evice within the drying spaceof said chamber with its cooling surface in direct contact with the airof said drying ace, and means whereby one of said devices ma besupported at different eleva tions to c ange t e rate of circulation ofthe air, substantially as described.

room having heatin means located adJacent one wall and near t e floor,cooling means located adjacent the opposite wall, and means whereb thecooling means may be su ported at di erent elevations to regulate ecirculation of air within the room, substantiall as described.

, LMER E. PERKINS. Witnesses:

In J. Winsen, MLA. Kimm.

cmuumpuainynmainar l Intl elch, l addressing the commissioner o!lateiitsh

